Final answer:
The rest energy of an object with a mass of 2.0 kg is 1.8 x 10^17 J.
Step-by-step explanation:
The rest energy of an object can be calculated using the equation E0 = mc2, where m is the mass of the object and c is the speed of light.
In this case, the mass of the object is 2.0 kg. To find the rest energy, we can substitute this value into the equation: E0 = (2.0 kg)(3.00 x 10^8 m/s)^2.
Calculating this, we get E0 = 1.8 x 10^17 J.